CHAPTER XI 



SYSTEMS OF MANURING CROPS 



High nnd Low Farming — Fertilising Constituents removed in 

 Meal and Corn — Losses of Nitrogen increased when Land is 

 in High Condition— Manures for Wheat — Barley: Importance 

 of Quality— Oats — Root Crops : Swedes, Mangolds, Potatoes 

 — Importance of Farmyard Manure for Root Crops — 

 Leguminous Crops : Heans, Clover, Lucerne, Sainfoin — 

 Value of Potassic Fertilisers — Grass Land — Effect of Manures 

 in changing the I'otanical Character of the Herbage — Land 

 laid up for Hay — Manures for Poor Pastures — Hops — Fruit — 

 Garden Manures — Manures for Tropical and Semi-Tropical 

 Crops : Sugar Cane, Tobacco, Cotton, Tea. 



In dealing with the specific properties of the various 

 fertilisers, a number of illustrations have been given 

 from the results of field experiments on particular crops 

 from which conclusions might be drawn as to the 

 fertilisers most appropriate to those crops, but in the 

 main these experiments have been selected to illustrate 

 the action of the fertiliser rather than the requirements 

 of the plant. It remains to reconsider the information 

 derived from experiments under its practical aspect, so 

 as to obtain a guide to the methods of manuring which 

 the farmer should adopt for the crops he is setting out 

 to grow. It is never possible to do this absolutely; the 

 proper manure for any particular crop must always be 

 conditioned by a number of local circumstances special 

 to the farm in question ; from which it follows that the 



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